Circular-saw guard



(No Model.)

J SILL. CIRCULAR SAW GUARD.

A Patented Jan. 10,1882

h 7%.4 MMA n PETERS. Piwb'lilhngraphlf. WJMM D. C.

' UNITED STATES PATENT OFFICE.

. JOSEPH SILL, OF rrcrunn ROCKS, PENNSYLVANIA.

CIRCULAR-SAW GUARD.

- SPECIFICATION forming part of Letters Patent No. 252,269, datedJanuary 10, 182.

' Application filed November 22, 1881. (N model.)

.To all whom it may concern Be it known that I, JOSEPH SILL, a citizenoft-he United States,residing atPicture Rocks,

in the county of Lycoming and State of Pennsylvania,haveinvented certainnew and useful Improvements in Circular-Saw Guards; and I do. herebydeclare the following to he ,a full,

clear, and exact description of the invention,

such as will enableothers skilled in the art to which. it appertains tomake and use the same,

reference being bad to the accompanying drawings, and to letters orfigures of reference marked thereon,which form a part of this specitFig. 2 is a vertical central sectionof Fig. 1.

fication.

Figure 1 is a perspective view of this device.

' This invention belongs to that class of devices whichare designed tocover or guard a circular saw, and not only protect the operator fromharm, but, also prevent the throwing off of pieces of wood, slivers,850., while sawsupports on the beam ing is going on.

The invention consists in the detail of the means used to adjust and fixthe guard in any desired vertical position, all as will now be fullyexplained. I

In the drawings, A denotes any ordinary table or frame in which the sawB,properly hung,

works. Above this table is placed, in any desired manner, the beam 0. Inthe guide-arm 0, attached to this beam, the shaft or stem (1 of thesaw-shield D may be worked up or down by means of the cog-wheel 0, nearthe middle of shaft E, which shaft has proper hearings or O, and actsupon the rack d on the back of the shield-stem d. It

end of the shaft E. If desired, this pawl may.

have a spring attached to it to insure its engaging with the teeth ofthe wheel e. The shield may be a semi-hemispherical case open at thebase, as now shown, or of any suitable shape or construction.

This device, as thus made, can be operated very easily to set it eitherup or down, while it will be securely held at any point desired.

I am aware that heretofore several devices having the same general endsin view as I have explained have been made and used; but none of themare made or operated as I have above described, or in as simple and easymanner.

Having thus described my invention, what I consider new, and desire tosecure by Letters Patent, is-- The saw guard or shield-D, having therack 01 on its stem (1, combined with beam 0, shaft E, cog-wheels e ande, and pawl F, substantially in the manner and for the purposes setforth.

In testimony whereof I affix my signature in presence of two witnesses.

, JOSEPH SILL.

Witnesses:

THOMAS H. LLOYD, WM. (L'KING.

